diff options
| author | Michael Grundy <grundym@us.ibm.com> | 2006-09-20 15:58:39 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-09-20 15:58:39 +0200 |
| commit | 4ba069b802c29eee066385f9826e2d83716626b4 (patch) | |
| tree | 663159a4d05a49b4133bb9145fc41fb95a6d4132 /arch/s390/kernel/entry64.S | |
| parent | 5432114baf0300286a6ca1b0aea549492a379432 (diff) | |
[S390] add kprobes support.
Signed-off-by: Michael Grundy <grundym@us.ibm.com>
Signed-off-by: David Wilder <dwilder@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/entry64.S')
| -rw-r--r-- | arch/s390/kernel/entry64.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 56f5f613b86..8b956d1538f 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -518,6 +518,8 @@ pgm_no_vtime2: #endif lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct lg %r1,__TI_task(%r9) + tm SP_PSW+1(%r15),0x01 # kernel per event ? + jz kernel_per mvc __THREAD_per+__PER_atmid(2,%r1),__LC_PER_ATMID mvc __THREAD_per+__PER_address(8,%r1),__LC_PER_ADDRESS mvc __THREAD_per+__PER_access_id(1,%r1),__LC_PER_ACCESS_ID @@ -553,6 +555,16 @@ pgm_no_vtime3: stosm __SF_EMPTY(%r15),0x03 # reenable interrupts j sysc_do_svc +# +# per was called from kernel, must be kprobes +# +kernel_per: + lhi %r0,__LC_PGM_OLD_PSW + sth %r0,SP_TRAP(%r15) # set trap indication to pgm check + la %r2,SP_PTREGS(%r15) # address of register-save area + larl %r14,sysc_leave # load adr. of system ret, no work + jg do_single_step # branch to do_single_step + /* * IO interrupt handler routine */ |